JPH087195Y2 - External repair device for pipe joint - Google Patents
External repair device for pipe jointInfo
- Publication number
- JPH087195Y2 JPH087195Y2 JP1988058768U JP5876888U JPH087195Y2 JP H087195 Y2 JPH087195 Y2 JP H087195Y2 JP 1988058768 U JP1988058768 U JP 1988058768U JP 5876888 U JP5876888 U JP 5876888U JP H087195 Y2 JPH087195 Y2 JP H087195Y2
- Authority
- JP
- Japan
- Prior art keywords
- pipe joint
- pipe
- joint portion
- sealing material
- connecting portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
本考案は、ガス導管などの地下布設管、特に管継手部
に対して、この箇所を局部的に掘削して地上に開放する
竪穴内に露出させ、その外面から漏洩補修または予防保
全の目的で、液状樹脂からなるシール材を用いて補修を
行なう管継手部の外面補修装置に関する。The present invention is intended for underground repair pipes such as gas conduits, especially pipe joints, where these locations are locally excavated and exposed in a vertical hole that opens to the ground, and for the purpose of leak repair or preventive maintenance from the outer surface. The present invention relates to a device for repairing the outer surface of a pipe joint, which repairs using a sealing material made of liquid resin.
一般に、地下に配管されているガス管などの既設配管
は、道路上を走行する車両の荷重や、車両走行時の振
動、地震、あるいは経年などにより、管継手部の接合状
態が変化して間隙を生じ、ガス漏れ等が起ることがあ
る。 そこで、近時、既設配管を布設状態のまま、管体の外
面から樹脂等のシール材を用いて補修する工法が提案さ
れており、このような補修工法として、例えば特公昭53
−3099号公報、実開昭52−17921号公報等に開示されて
いるように、掘削により地上に開口する竪穴内に露出さ
せた管体の管継手部の外周面にシール用カバーを被包し
て、そのカバー内に液状シール材を充填し、固化させて
補修を行なうようにしたものが知られている。Generally, existing pipes such as gas pipes that are piped underground have gaps in the joints of pipe joints that change due to the load of vehicles traveling on the road, vibrations during vehicle traveling, earthquakes, or aging. May occur, and gas leakage may occur. Therefore, recently, there has been proposed a method of repairing the existing pipe with the sealing material such as resin from the outer surface of the pipe body in the installed state. As such a repairing method, for example, Japanese Patent Publication Sho 53
As disclosed in Japanese Unexamined Patent Publication No. 3099, Japanese Utility Model Laid-Open No. 52-17921, etc., a sealing cover is wrapped around the outer peripheral surface of the pipe joint portion of the tubular body exposed in the vertical hole opened on the ground by excavation. Then, a liquid sealing material is filled in the cover and solidified for repair.
しかしながら、上述した従来の工法では、竪穴内に露
出された管継手部の外周面にサンドブラストをかけ、表
面に付着している土砂、錆等を除去してクリーニングを
行った後、竪穴内で管継手部の外周面に布状のシール用
カバーを被包し、上記シール用カバー内の管継手部との
間に生じる環状空間にシール材を注入する作業工程が採
られているが、管継手部の外周部には、フランジ部によ
り大きな段部が形成されているので、シール用カバー内
の環状空間内に注入されるシール材などの使用量が増大
して、コスト高になるという問題があった。また、管継
手部の外周部には連結部分としての複数のボルト・ナッ
トが露出しているので、シール用カバーを被包するとき
に、ボルト・ナットに引っかかって被包し難いという問
題もあった。 本考案は、上述した問題点を解決するために提案され
たものて、補修すべき管継手部の外周にシール材を充填
することにより、ガス洩れを防止するようにした外面補
修に際して、管継手部の外周に、連結部とフランジ部の
連結部分を除いた外側部位に発泡スチロールからなる複
数のスペーサを環状に介在させ、液状樹脂などの補修用
シール材の使用量を減らし、シール性を確実にし、ま
た、シール用カバーを被包し易くした管継手部の外面補
修装置を提供することを目的とする。However, in the conventional method described above, sandblasting is applied to the outer peripheral surface of the pipe joint portion exposed in the vertical hole to remove dirt, rust, etc. adhering to the surface, and cleaning is performed, and then the pipe is piped in the vertical hole. The work process of enclosing the cloth-like sealing cover on the outer peripheral surface of the joint portion and injecting the sealing material into the annular space formed between the sealing cover and the pipe joint portion is adopted. Since a larger step is formed in the outer peripheral part of the flange part by the flange part, there is a problem that the amount of the seal material or the like injected into the annular space in the sealing cover increases, resulting in high cost. there were. Further, since a plurality of bolts and nuts serving as connecting portions are exposed on the outer peripheral portion of the pipe joint, there is also a problem that when the sealing cover is encapsulated, it is difficult for the bolts and nuts to be caught and to be encapsulated. It was The present invention has been proposed in order to solve the above-mentioned problems, and by filling the outer periphery of the pipe joint portion to be repaired with a sealing material, to prevent gas leakage, the pipe joint is repaired. On the outer periphery of the part, multiple spacers made of Styrofoam are annularly interposed in the outer part excluding the connecting part of the connecting part and the flange part, reducing the amount of repair sealing material such as liquid resin used and ensuring sealing performance. It is another object of the present invention to provide an outer surface repairing device for a pipe joint part in which a sealing cover can be easily covered.
上記の目的を達成するために本考案は、露出された地
下布設管１の補修すべき管継手部２の外側を被包し、管
継手部２との間にシール材８を充填する環状空間を形成
するシール用カバー５と、このシール用カバー５により
被包された管継手部２の接続部2bとフランジ部2cとを連
結する連結部分2aを除いて前記接続部2bおよびフランジ
部2cの外側部分を環状に覆う，複数片の発泡スチロール
よりなるスペーサ4,4aとからなることを特徴としてい
る。In order to achieve the above-mentioned object, the present invention provides an annular space that covers the outside of a pipe joint portion 2 of an exposed underground laying pipe 1 to be repaired and fills a sealing material 8 with the pipe joint portion 2. Of the connecting portion 2b and the flange portion 2c except for the sealing cover 5 which forms the connecting portion 2a for connecting the connecting portion 2b and the flange portion 2c of the pipe joint portion 2 covered by the sealing cover 5 It is characterized in that it is composed of spacers 4 and 4a made of a plurality of pieces of styrofoam, which cover the outer portion in an annular shape.
上記の構成に基づいて、本考案によれば、管継手部を
竪穴内に露出させ、この管継手部の外側にシール用カバ
ーを被包してシール材を充填する補修する際、上記管継
手部の接続部2bとフランジ部2cとを連結する連結部分2a
を除いた接続部2bおよびフランジ部2c側部分に発泡スチ
ロールからなる複数のスペーサを環状に配設し、その外
側からシール材が充填され、シール材の使用量が大幅に
削減されて経済的な補修作業が実施される。また、管継
手部にシール用カバーを被包するとき連結部分に引っか
かることなく被包でき、さらに、発泡スチロールは軽量
で成形が容易であり、緩衝作用があり、シール材を充填
固化させてのち人工的に破砕が必要なときは、破砕が容
易である。Based on the above configuration, according to the present invention, when the pipe joint portion is exposed in the vertical hole and the sealing cover is covered on the outside of the pipe joint portion and the sealing material is filled, the pipe joint is repaired. Connecting portion 2a for connecting the connecting portion 2b of the portion and the flange portion 2c
Multiple spacers made of styrofoam are annularly arranged on the connection part 2b and the flange part 2c side part except for, and the sealing material is filled from the outside, and the amount of the sealing material used is greatly reduced and economical repair is performed. Work is carried out. In addition, when the sealing cover is wrapped in the pipe joint, it can be wrapped without being caught in the connecting portion.In addition, Styrofoam is lightweight, easy to mold, has a cushioning effect, and after filling and solidifying the sealing material, it is artificial. When crushing is required, crushing is easy.
【実施例】 以下、本考案による実施例を添付した図面に基づいて
詳細に説明する。 第１図は、本考案による実施例を概略的に示す要部の
断面図、第２図は本考案によるスペーサの正面図であ
る。図において、符号１は地下に布設された鋳鉄管から
なるガス導管で、この導管１は、その長さ方向に管継手
部２をほぼ所定間隔に設けて連結されている。 この管継手部２は、経年変化や地盤変化等により、接
合部分に隙間を生じてガス導管１内を流通するガスの漏
洩を生ずることがあり、ガス漏洩が生じた場合には、迅
速に補修する必要があるとともに、ガス洩れが生じない
場合でも、予防保全の目的から管継手部２を補修してお
く必要がある。 上記管継手部２の補修に際しては、まず、管継手部２
の位置を検知し、その上方の地上部より竪穴３を掘削
し、ガスを流通させた状態のまま、この竪穴３内に布設
されていた管継手部２を中心に、その前後の導管１の周
囲を露出させる。 次に、上記竪穴３内に露出した管継手部２の周囲に付
着している土砂を、サンドブラスト等により除去すると
ともに、管継手部２の接続部2bとフランジ部2cとを連結
する連結部分（ボルト・ナット）2aを除いた接続部2bお
よびフランジ部2c側部分を、第２図（ａ），（ｂ）に示
すように、プラスチック（発泡スチロール）により成形
された複数のスペーサ４および4aが環状に固設される。 上記スペーサ４および4aは、管継手部２の接続部2bと
フランジ部2cのボルト・ナット（連結部分）2aを除いて
４つの発泡スチロール片を環状に配置し、管継手部２の
接続部2bとフランジ部2cの外側面に取付け易いように成
形されている。このスペーサ４および4aは他の形状にし
てもよいものである。 上記スペーサ４および4aが管継手部２の連結部分2aを
除いた接続部2bおよびフランジ部2cの外側部分に環状に
固設された後、管継手部２の部分か袋状のシール用カバ
ー５により被包される。 上記シール用カバー５は、ファスナ付の気密性織布な
どで成形され、シール材注入管６と、空気抜き管７が設
置されており、上記空気抜き管７が管継手部２の真上に
位置するように位置決めして被包される。シール用カバ
ー５で形成された管継手部２の外周面の環状空隙内に液
状樹脂などのシール材８が充填される。 上記シール材８の硬化が進んだ後は、シール用カバー
５および注入管６、空気抜き管７を埋戻して一連の補修
作業が完了する。Embodiments Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a sectional view of a main part schematically showing an embodiment according to the present invention, and FIG. 2 is a front view of a spacer according to the present invention. In the figure, reference numeral 1 is a gas conduit made of cast iron pipe laid underground, and the conduit 1 is connected with pipe joint portions 2 provided at substantially predetermined intervals in the length direction thereof. This pipe joint part 2 may cause a gap in the joint portion to leak gas flowing through the gas conduit 1 due to secular change, ground change, etc. If gas leak occurs, repair it promptly. It is necessary to repair the pipe joint portion 2 for the purpose of preventive maintenance even if gas leakage does not occur. When repairing the pipe joint portion 2, first, the pipe joint portion 2
Position, and the vertical hole 3 is excavated from the above ground part, and with the gas flowing, the pipe joint part 2 laid inside the vertical hole 3 is centered, Expose the surroundings. Next, the earth and sand adhering to the periphery of the pipe joint portion 2 exposed in the vertical hole 3 is removed by sandblasting or the like, and a connecting portion for connecting the connecting portion 2b and the flange portion 2c of the pipe joint portion 2 ( As shown in FIGS. 2 (a) and 2 (b), a plurality of spacers 4 and 4a formed of plastic (styrofoam) form an annular shape at the side of the connecting portion 2b and the flange portion 2c excluding the bolts / nuts 2a. Fixed to. In the spacers 4 and 4a, four styrofoam pieces are arranged in an annular shape except for the connecting portion 2b of the pipe joint portion 2 and the bolts / nuts (connecting portion) 2a of the flange portion 2c, and are connected to the connecting portion 2b of the pipe joint portion 2. It is formed so as to be easily attached to the outer surface of the flange portion 2c. The spacers 4 and 4a may have other shapes. After the spacers 4 and 4a are annularly fixed to the outer portions of the connecting portion 2b and the flange portion 2c of the pipe joint portion 2 excluding the connecting portion 2a, the pipe joint portion 2 or a bag-like sealing cover 5 is provided. Encapsulated by. The sealing cover 5 is formed of an airtight woven fabric with fasteners, etc., and is provided with a sealing material injection pipe 6 and an air vent pipe 7, and the air vent pipe 7 is located right above the pipe joint portion 2. It is positioned and encapsulated. A sealing material 8 such as a liquid resin is filled in an annular space formed on the outer peripheral surface of the pipe joint portion 2 formed by the sealing cover 5. After the sealing material 8 is cured, the sealing cover 5, the injection pipe 6, and the air vent pipe 7 are backfilled to complete a series of repair work.
以上詳細に説明したように、本考案による管継手部の
外面補修装置は、管継手部２の外側から補修を行なう
際、管継手部２を竪穴３内に露出させて、管継手部２お
よび導管１の外周面を清掃した後、管継手部２の接続部
2bとフランジ部2cとを連結する連結部分2aを除いて前記
接続部2bおよびフランジ部2cの外側部分を環状に覆う複
数片の発泡スチロールからなるスペーサ4,4aを配設し、
シール用カバー５を被包してシール材８を充填補修する
ので、管継手部２とシール用カバー５との間の環状空間
の主要な部分を占める接続部2bおよびフランジ部2cの外
側部分を、両者の連結部分2aに邪魔されることなく容易
に、スペーサ4,4aで覆うことができると共に、充填され
るシール材８の使用量を大幅に削減することができ、経
済的である。 また、スペーサ4,4aを形成する発泡スチロールは、軽
量で成形が容易であり、しかも緩衝作用があって補修後
に好環境を保持し、シール材８を充填固化させてのち人
工的に破砕が必要なときは、破砕が容易である。As described in detail above, the outer surface repair apparatus for a pipe joint portion according to the present invention exposes the pipe joint portion 2 in the vertical hole 3 when performing repair from the outside of the pipe joint portion 2, and After cleaning the outer peripheral surface of the conduit 1, the connection part of the pipe joint part 2
Arranged spacers 4 and 4a consisting of a plurality of styrofoam annularly covering the outer portion of the connecting portion 2b and the flange portion 2c except the connecting portion 2a that connects the 2b and the flange portion 2c,
Since the sealing cover 5 is covered and the sealing material 8 is filled and repaired, the outer portion of the connecting portion 2b and the flange portion 2c which occupy the main portion of the annular space between the pipe joint portion 2 and the sealing cover 5 are fixed. The spacers 4 and 4a can be easily covered without being hindered by the connecting portion 2a of the both, and the amount of the sealing material 8 to be filled can be greatly reduced, which is economical. Further, the styrofoam forming the spacers 4 and 4a is lightweight and easy to mold, and also has a buffering effect to maintain a favorable environment after repair, and it is necessary to artificially crush after filling and solidifying the sealing material 8. Sometimes it is easy to crush.
第１図は、本考案による実施例を概略的に示す要部の断
面図、第２図（ａ），（ｂ）は、本考案によるスペーサ
の正面図である。 １……導管、２……管継手部、2a……連結部分（ボルト
・ナット）、2b……接続部、2c……フランジ部、３……
竪穴、4,4a……発泡スチロールからなるスペーサ、５…
…シール用カバー、６……シール材注入管、７……空気
抜き管、８……シール材。FIG. 1 is a sectional view of a main part schematically showing an embodiment according to the present invention, and FIGS. 2 (a) and 2 (b) are front views of a spacer according to the present invention. 1 ... conduit, 2 ... pipe joint part, 2a ... connecting part (bolts / nuts), 2b ... connecting part, 2c ... flange part, 3 ...
Vertical holes, 4,4a ... Styrofoam spacers, 5 ...
… Seal cover, 6 …… Seal material injection pipe, 7 …… Air vent pipe, 8 …… Seal material.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−116992（ＪＰ，Ａ) 特開 昭61−96284（ＪＰ，Ａ) 実開 昭61−89792（ＪＰ，Ｕ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-57-116992 (JP, A) JP-A-61-96284 (JP, A) Practical application Sho-61-89792 (JP, U)
Claims (1)
管継手部（２）の外側を被包し、管継手部（２）との間
にシール材（８）を充填する環状空間を形成するシール
用カバー（５）と、このシール用カバー（５）により被
包された管継手部（２）の接続部（2b）とフランジ部
（2c）とを連結する連結部分（2a）を除いて前記接続部
（2b）およびフランジ部（2c）の外側部分を環状に覆
う，複数片の発泡スチロールよりなるスペーサ（4,4a）
とからなる管継手部の外面補修装置。1. A ring for covering the outside of a pipe joint part (2) to be repaired of an exposed underground laying pipe (1) and filling a sealing material (8) between the pipe joint part (2) and the pipe joint part (2). A seal cover (5) that forms a space, and a connecting portion (2a) that connects the connecting portion (2b) and the flange portion (2c) of the pipe joint portion (2) covered by the seal cover (5). A spacer (4, 4a) consisting of a plurality of pieces of styrofoam that annularly covers the outer portions of the connection portion (2b) and the flange portion (2c) except for
An outer surface repairing device for pipe joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988058768U JPH087195Y2 (en) | 1988-04-28 | 1988-04-28 | External repair device for pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988058768U JPH087195Y2 (en) | 1988-04-28 | 1988-04-28 | External repair device for pipe joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01166894U JPH01166894U (en) | 1989-11-22 |
| JPH087195Y2 true JPH087195Y2 (en) | 1996-03-04 |
Family
ID=31284566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988058768U Expired - Lifetime JPH087195Y2 (en) | 1988-04-28 | 1988-04-28 | External repair device for pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087195Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10561550B2 (en) | 2005-07-08 | 2020-02-18 | Hill-Rom Services, Inc. | Patient support apparatus having alert light |
| US11382813B2 (en) | 2004-10-29 | 2022-07-12 | Stryker Corporation | Patient support with improved control |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6196284A (en) * | 1984-10-15 | 1986-05-14 | 東京瓦斯株式会社 | Method of construction of repair of outer surface of underground laid pipe |
-
1988
- 1988-04-28 JP JP1988058768U patent/JPH087195Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11382813B2 (en) | 2004-10-29 | 2022-07-12 | Stryker Corporation | Patient support with improved control |
| US10561550B2 (en) | 2005-07-08 | 2020-02-18 | Hill-Rom Services, Inc. | Patient support apparatus having alert light |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01166894U (en) | 1989-11-22 |
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